1 #ifndef QEMU_NET_H 2 #define QEMU_NET_H 3 4 #include "qemu/queue.h" 5 #include "qapi/qapi-types-net.h" 6 #include "net/queue.h" 7 8 #define MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X" 9 #define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \ 10 ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \ 11 ((uint8_t *)(x))[4], ((uint8_t *)(x))[5] 12 13 #define MAX_QUEUE_NUM 1024 14 15 /* Maximum GSO packet size (64k) plus plenty of room for 16 * the ethernet and virtio_net headers 17 */ 18 #define NET_BUFSIZE (4096 + 65536) 19 20 struct MACAddr { 21 uint8_t a[6]; 22 }; 23 24 /* qdev nic properties */ 25 26 typedef struct NICPeers { 27 NetClientState *ncs[MAX_QUEUE_NUM]; 28 int32_t queues; 29 } NICPeers; 30 31 typedef struct NICConf { 32 MACAddr macaddr; 33 NICPeers peers; 34 int32_t bootindex; 35 } NICConf; 36 37 #define DEFINE_NIC_PROPERTIES(_state, _conf) \ 38 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ 39 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers) 40 41 42 /* Net clients */ 43 44 typedef void (NetPoll)(NetClientState *, bool enable); 45 typedef bool (NetCanReceive)(NetClientState *); 46 typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); 47 typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); 48 typedef void (NetCleanup) (NetClientState *); 49 typedef void (LinkStatusChanged)(NetClientState *); 50 typedef void (NetClientDestructor)(NetClientState *); 51 typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); 52 typedef bool (HasUfo)(NetClientState *); 53 typedef bool (HasVnetHdr)(NetClientState *); 54 typedef bool (HasVnetHdrLen)(NetClientState *, int); 55 typedef void (UsingVnetHdr)(NetClientState *, bool); 56 typedef void (SetOffload)(NetClientState *, int, int, int, int, int); 57 typedef void (SetVnetHdrLen)(NetClientState *, int); 58 typedef int (SetVnetLE)(NetClientState *, bool); 59 typedef int (SetVnetBE)(NetClientState *, bool); 60 typedef struct SocketReadState SocketReadState; 61 typedef void (SocketReadStateFinalize)(SocketReadState *rs); 62 typedef void (NetAnnounce)(NetClientState *); 63 64 typedef struct NetClientInfo { 65 NetClientDriver type; 66 size_t size; 67 NetReceive *receive; 68 NetReceive *receive_raw; 69 NetReceiveIOV *receive_iov; 70 NetCanReceive *can_receive; 71 NetCleanup *cleanup; 72 LinkStatusChanged *link_status_changed; 73 QueryRxFilter *query_rx_filter; 74 NetPoll *poll; 75 HasUfo *has_ufo; 76 HasVnetHdr *has_vnet_hdr; 77 HasVnetHdrLen *has_vnet_hdr_len; 78 UsingVnetHdr *using_vnet_hdr; 79 SetOffload *set_offload; 80 SetVnetHdrLen *set_vnet_hdr_len; 81 SetVnetLE *set_vnet_le; 82 SetVnetBE *set_vnet_be; 83 NetAnnounce *announce; 84 } NetClientInfo; 85 86 struct NetClientState { 87 NetClientInfo *info; 88 int link_down; 89 QTAILQ_ENTRY(NetClientState) next; 90 NetClientState *peer; 91 NetQueue *incoming_queue; 92 char *model; 93 char *name; 94 char info_str[256]; 95 unsigned receive_disabled : 1; 96 NetClientDestructor *destructor; 97 unsigned int queue_index; 98 unsigned rxfilter_notify_enabled:1; 99 int vring_enable; 100 int vnet_hdr_len; 101 bool is_netdev; 102 QTAILQ_HEAD(, NetFilterState) filters; 103 }; 104 105 typedef struct NICState { 106 NetClientState *ncs; 107 NICConf *conf; 108 void *opaque; 109 bool peer_deleted; 110 } NICState; 111 112 struct SocketReadState { 113 /* 0 = getting length, 1 = getting vnet header length, 2 = getting data */ 114 int state; 115 /* This flag decide whether to read the vnet_hdr_len field */ 116 bool vnet_hdr; 117 uint32_t index; 118 uint32_t packet_len; 119 uint32_t vnet_hdr_len; 120 uint8_t buf[NET_BUFSIZE]; 121 SocketReadStateFinalize *finalize; 122 }; 123 124 int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size); 125 char *qemu_mac_strdup_printf(const uint8_t *macaddr); 126 NetClientState *qemu_find_netdev(const char *id); 127 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 128 NetClientDriver type, int max); 129 NetClientState *qemu_new_net_client(NetClientInfo *info, 130 NetClientState *peer, 131 const char *model, 132 const char *name); 133 NICState *qemu_new_nic(NetClientInfo *info, 134 NICConf *conf, 135 const char *model, 136 const char *name, 137 void *opaque); 138 void qemu_del_nic(NICState *nic); 139 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 140 NetClientState *qemu_get_queue(NICState *nic); 141 NICState *qemu_get_nic(NetClientState *nc); 142 void *qemu_get_nic_opaque(NetClientState *nc); 143 void qemu_del_net_client(NetClientState *nc); 144 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 145 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 146 int qemu_can_send_packet(NetClientState *nc); 147 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 148 int iovcnt); 149 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 150 int iovcnt, NetPacketSent *sent_cb); 151 ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 152 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 153 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 154 int size, NetPacketSent *sent_cb); 155 void qemu_purge_queued_packets(NetClientState *nc); 156 void qemu_flush_queued_packets(NetClientState *nc); 157 void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge); 158 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 159 bool qemu_has_ufo(NetClientState *nc); 160 bool qemu_has_vnet_hdr(NetClientState *nc); 161 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); 162 void qemu_using_vnet_hdr(NetClientState *nc, bool enable); 163 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, 164 int ecn, int ufo); 165 void qemu_set_vnet_hdr_len(NetClientState *nc, int len); 166 int qemu_set_vnet_le(NetClientState *nc, bool is_le); 167 int qemu_set_vnet_be(NetClientState *nc, bool is_be); 168 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 169 int qemu_show_nic_models(const char *arg, const char *const *models); 170 void qemu_check_nic_model(NICInfo *nd, const char *model); 171 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 172 const char *default_model); 173 174 void print_net_client(Monitor *mon, NetClientState *nc); 175 void hmp_info_network(Monitor *mon, const QDict *qdict); 176 void net_socket_rs_init(SocketReadState *rs, 177 SocketReadStateFinalize *finalize, 178 bool vnet_hdr); 179 NetClientState *qemu_get_peer(NetClientState *nc, int queue_index); 180 181 /* NIC info */ 182 183 #define MAX_NICS 8 184 185 struct NICInfo { 186 MACAddr macaddr; 187 char *model; 188 char *name; 189 char *devaddr; 190 NetClientState *netdev; 191 int used; /* is this slot in nd_table[] being used? */ 192 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 193 int nvectors; 194 }; 195 196 extern int nb_nics; 197 extern NICInfo nd_table[MAX_NICS]; 198 extern const char *host_net_devices[]; 199 200 /* from net.c */ 201 int net_client_parse(QemuOptsList *opts_list, const char *str); 202 void show_netdevs(void); 203 int net_init_clients(Error **errp); 204 void net_check_clients(void); 205 void net_cleanup(void); 206 void hmp_host_net_add(Monitor *mon, const QDict *qdict); 207 void hmp_host_net_remove(Monitor *mon, const QDict *qdict); 208 void netdev_add(QemuOpts *opts, Error **errp); 209 210 int net_hub_id_for_client(NetClientState *nc, int *id); 211 NetClientState *net_hub_port_find(int hub_id); 212 213 #define DEFAULT_NETWORK_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifup" 214 #define DEFAULT_NETWORK_DOWN_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifdown" 215 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 216 #define DEFAULT_BRIDGE_INTERFACE "br0" 217 218 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 219 220 #define POLYNOMIAL_BE 0x04c11db6 221 #define POLYNOMIAL_LE 0xedb88320 222 uint32_t net_crc32(const uint8_t *p, int len); 223 uint32_t net_crc32_le(const uint8_t *p, int len); 224 225 #define vmstate_offset_macaddr(_state, _field) \ 226 vmstate_offset_array(_state, _field.a, uint8_t, \ 227 sizeof(typeof_field(_state, _field))) 228 229 #define VMSTATE_MACADDR(_field, _state) { \ 230 .name = (stringify(_field)), \ 231 .size = sizeof(MACAddr), \ 232 .info = &vmstate_info_buffer, \ 233 .flags = VMS_BUFFER, \ 234 .offset = vmstate_offset_macaddr(_state, _field), \ 235 } 236 237 #endif 238